Provided is a semiconductor device including a semiconductor substrate. The semiconductor substrate has: an active portion; and a plurality of gate trench portions provided in the active portion on an upper surface of the semiconductor substrate and extending along an extending direction. The semiconductor device further includes: a gate runner provided between the active portion and an end side of the semiconductor substrate; and a plurality of gate polysilicon disposed apart from each other along the end side and respectively connecting the plurality of gate trench portions to the gate runner.

The semiconductor device has the main surface, the semiconductor substrate having the first impurity region formed on the main surface, the first electrode formed on the main surface having the first impurity region, the insulating film formed on the main surface such that surround the first electrode, the second electrode formed on the insulating film such that spaced apart from the first electrode and annularly surround the first electrode, and the semi-insulating film. The first electrode has the outer peripheral edge portion. The semi-insulating film is continuously formed from on the outer peripheral edge portion to on the second electrode. The outer peripheral edge portion includes the first corner portion. The second electrode has the second corner portion facing the first corner portion. The semi-insulating film on the insulating film is removed between the first corner and the second corner portion.

An object of a technique of the present disclosure is to suppress reduction in withstand voltage in a power semiconductor device. A semiconductor base includes an n− type semiconductor substrate and at least one p type diffusion layer formed separately from each other on a surface layer on a side of a first main surface of the semiconductor substrate in a terminal region. A power semiconductor device includes at least one insulating film formed on a first main surface of the semiconductor base between an insulating film and the insulating film. A semi-insulating film has contact with the insulating film on the insulating film, and has contact with the first main surface in at least two regions where the insulating film is not formed between the insulating films and.

A diode and a power circuit are provided. The diode may include: a first electrode layer; a drift layer located above the first electrode layer, a doping concentration of the drift layer is less than that of the first electrode layer; and the drift layer includes an active region and a terminal region surrounding the active region; a second electrode layer disposed in the active region, where the second electrode layer and the drift layer are doped with impurities of different properties; and the second electrode layer includes a first region and a second region surrounding the first region, and the first region and the second region are separated by a first insulation trench, where the first region is connected to a power supply through a first conductor, and the second region is connected to the power supply through a second conductor, a first resistor, and the first conductor sequentially.

A high-voltage semiconductor device includes a substrate, a body region, a well region, a bulk region, a source, a drain, an isolation region, a gate structure, and a resistor. The body region and the well region are disposed in the substrate. The bulk region and the source are disposed in the body region. The drain is disposed in the well region. The isolation region is disposed on the well region. The isolation region is disposed between the drain and the source. The gate structure is disposed on the substrate. The gate structure extends onto a portion of the isolation region. The resistor is disposed on the isolation region. The resistor is electrically connected to the bulk region and the drain, or the resistor is electrically connected to the drain and/or the source.

A semiconductor device includes a substrate including an active region, a first gate line and a second gate line in the active region, a first source/drain contact pattern in the active region at one side of the first gate line, a second source/drain contact pattern in the active region at one side of the second gate line, and a dummy source/drain contact pattern in the active region between the first gate line and the second gate line. The first gate line and the second gate line may be spaced apart from each other in the first direction and may extend in the second direction. The second direction may cross the first direction. A size of the dummy source/drain contact pattern may be less than a size of the first source/drain contact pattern and a size of the second source/drain contact pattern.

Disclosed herein are IC structures, packages, and devices assemblies that use ions or fixed charge to create field plate structures which are embedded in a dielectric material between gate and drain electrodes of a transistor. Ion- or fixed charge-based field plate structures may provide viable approaches to changing the distribution of electric field at a transistor drain to increase the breakdown voltage of a transistor without incurring the large parasitic capacitances associated with the use of metal field plates. In one aspect, an IC structure includes a transistor, a dielectric material between gate and drain electrodes of the transistor, and an ion- or fixed charge-based region within the dielectric material, between the gate and the drain electrodes. Such an ion- or fixed charge-based region realizes an ion- or fixed charge-based field plate structure. Optionally, the IC structure may include multiple ion- or fixed charge-based field plate structures.

A semiconductor device, allowing easy hole extraction, including a semiconductor substrate having drift and base regions; and transistor and diode portions, in which trench portions and mesa portions are formed, is provided. The transistor portion includes emitter and contact regions above the base region and exposed to an upper surface of the semiconductor substrate. The emitter region has a higher concentration than the drift region. The contact region has a higher concentration than the base region. The mesa portions include boundary mesa portion(s) at a boundary between the transistor and diode portions. The trench portions include dummy trench portion(s) provided adjacent to a trench portion adjacent to the boundary mesa portion(s) and provided on the transistor portion side relative to the trench portion adjacent to the boundary mesa portion(s). The boundary mesa portion(s) include a base boundary mesa portion in which the base region is exposed to the upper surface.

A semiconductor device includes a semiconductor substrate having a first conductivity type drift region and a second conductivity type base region above the drift region, trench portions at an upper surface of the semiconductor substrate arrayed parallel to one another, each of them penetrating the base region, and mesa portions between respective trench portions. Among the mesa portions, at least one mesa portion includes a first conductivity type first semiconductor region having a higher concentration than the drift region, a second conductivity type second semiconductor region having a higher concentration than the base region, and a first conductivity type accumulation region between the base and drift regions and has a higher concentration than the drift region. The drift region does not extend above the accumulation region. In a longitudinal direction of the trench portions, the accumulation region extends beyond an end portion of the first semiconductor region.

A termination structure of a super-junction power device has a novel polysilicon resistive field plate at the top of a termination region between a transition region and an edge of the device. By utilizing the regular distribution of potential in the field plate, an additional electric field is introduced at the top of the termination structure to limit the expansion of a non-depletion region and optimize the distribution of charges. The termination structure includes a first doping type epitaxial layer, a second doping type compensation region, a second doping type body region, a second doping type lateral connection layer, a second doping type body contact region, a first doping type source contact region, a gate oxide layer, a passivation layer, a field oxide layer, a gate electrode, a second doping type edge contact region, a polysilicon resistive field plate, a metal layer and the like.